CN202846274U - Double-bearing dynamic pressure oil slick idler pulley main shaft structure of high-precision centerless grinding machine - Google Patents
Double-bearing dynamic pressure oil slick idler pulley main shaft structure of high-precision centerless grinding machine Download PDFInfo
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- CN202846274U CN202846274U CN 201220470300 CN201220470300U CN202846274U CN 202846274 U CN202846274 U CN 202846274U CN 201220470300 CN201220470300 CN 201220470300 CN 201220470300 U CN201220470300 U CN 201220470300U CN 202846274 U CN202846274 U CN 202846274U
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- guide wheel
- main shaft
- wheel main
- bearing
- idler pulley
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Abstract
The utility model relates to a double-bearing dynamic pressure oil slick idler pulley main shaft structure of a high-precision centerless grinding machine which comprises an idler pulley main shaft. The double-bearing dynamic pressure oil slick idler pulley main shaft structure of the high-precision centerless grinding machine is characterized in that the fore end of the idler pulley main shaft is provided with a five-piece ball bearing short bearing bush; a set of the five-piece ball bearing short bearing bush which is located on the fore end of the idler pulley main shaft is installed on the front bearing seat; a bi-direction thrust ball bearing as auxiliary bearing is installed in the bearing seat; another set of the five-piece ball bearing short bearing bush is installed on the tail end of the idler pulley main shaft; another set of the five-piece ball bearing short bearing bush is installed on the rear bearing seat; the idler pulley main shaft is placed on a idler pulley support with a double-sleeve structure to form a front bearing and rear bearing idler pulley main shaft structure, wherein a idler pulley grinding wheel is placed in the middle of the idler pulley main shaft. The double-bearing dynamic pressure oil slick idler pulley main shaft structure of high-precision centerless grinding machine is high in idler pulley main shaft rotation precision, strong in environmental adaptation, large in bearing capacity, convenient to process and manufacture, stable and reliable. The double-bearing dynamic pressure oil slick idler pulley main shaft structure of high-precision centerless grinding machine has the advantages of being compact in structure, good in rigidity, convenient to process and manufacture, and stable in performance.
Description
Technical field
The utility model relates to a kind of high accuracy centerless grinding machine center impeller type dynamic pressure oil film guide wheel main axle structure, belongs to mechanical equipment technical field.
Background technology
When using the centerless grinder processing parts, carriage is responsible for support part, and emery wheel is responsible for the grinding part, and guide wheel then plays guiding, the feed velocity of support part and control part.This shows that the quality of guide wheel rotating accuracy directly affects the quality of processing parts.Guide wheel need be installed on the guide wheel main shaft, and existing common guide pulley of centerless grinder main axle structure adopts cantilevered, whole cone sliding bearing mostly.
Because adopt inadequate fuel feeding journal bearing, starting torque is large, liquid boundary friction, lubrication, bearing rigidity are relatively relatively poor, and guide wheel base bearing loading capability is little, can only be used for the centerless grinder of light-duty processing small dimension part.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, disadvantage for traditional structure, a kind of high accuracy centerless grinding machine center impeller type dynamic pressure oil film guide wheel main axle structure is provided, this center impeller type dynamic pressure oil film guide wheel spindle rotation accuracy is high, environmental adaptability is strong, bearing capacity is large, and convenient processing and manufacture is reliable and stable.
According to the technical scheme that the utility model provides, high accuracy centerless grinding machine center impeller type dynamic pressure oil film guide wheel main axle structure comprises guide wheel main shaft, guide wheel, chuck body, and guide wheel is fixed in the middle of the guide wheel main shaft by the end face clamping of former and later two chuck body; Chuck body and guide wheel screw fastening; Feature is: described guide wheel front-end of spindle is provided with the short bearing shell of one group of five chip Ball support, and the short bearing shell of one group of five chip Ball support of guide wheel front-end of spindle is installed on the front support seat, and the short bearing shell inner ring of five chip Ball supports and guide wheel main shaft match; Bearing block, is equipped with double-direction thrust ball bearing and makes aiding support on the front support seat with screw fastening in the bearing block; Double-direction thrust ball bearing axially compresses with front gland and locking nut, and double-direction thrust ball bearing is radially used the lining adjusting play; The guide wheel rear-end of spindle is provided with another and organizes the short bearing shell of five chip Ball supports, and another is organized the short bearing shell of five chip Ball supports and is installed on the rear branching holder, and the short bearing shell inner ring of five chip Ball supports and guide wheel main shaft match; The guide wheel main shaft is installed on the wheel frame of double-sleeve structure, has formed a front and back double base guide wheel main axle structure that the guide wheel emery wheel is mid-.
As a further improvement on the present invention, described guide wheel rear-end of spindle is provided with semicircle keyway, links by woodruff key and coupling band, is compressed by rear pressing cover.
As a further improvement on the present invention, described guide wheel front-end of spindle is equipped with the front connector circle; The guide wheel rear-end of spindle is equipped with rear joint circle; Be respectively equipped with oil-in, oil return opening and drain tap on described front connector circle and the rear joint circle.
As a further improvement on the present invention, on the described guide wheel main shaft a plurality of outside framework oil seals are installed, prevent leakage of oil.
Compared with the prior art the utility model has the following advantages:
The utility model center impeller type dynamic pressure oil film guide wheel spindle rotation accuracy is high, and environmental adaptability is strong, and bearing capacity is large, and convenient processing and manufacture is reliable and stable; And has compact conformation, good rigidly, convenient processing and manufacture, the characteristics such as stable performance.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the A～A cross section view of Fig. 1.
The specific embodiment
Following the utility model is further described in connection with the embodiment in the accompanying drawing:
Such as Fig. 1～shown in Figure 2, comprise guide wheel main shaft 1, guide wheel 2, chuck body 3, the short bearing shell 4 of five chip Ball supports, front support seat 5, bearing block 6, front connector circle 7, front gland 8, locking nut 9, lining 10, double-direction thrust ball bearing 11, spheric washer 12, rear branching holder 13, rear joint circle 14, woodruff key 15, coupling band 16, rear pressing cover 17, screw base 18, packing ring 19, tight-hanged screw 20, supporting screw 21.
Guide wheel 2 is fixed in the middle of the guide wheel main shaft 1 by the end face clamping of former and later two chuck body 3 in the utility model.Chuck body 3 is used screw fastening with guide wheel 2; Guide wheel main shaft 1 front end is provided with the short bearing shell 4 of one group of five chip Ball support, the short bearing shell 4 of one group of five chip Ball support of guide wheel main shaft 1 front end is installed on the front support seat 5 by screw base 18, packing ring 19, tight-hanged screw 20, supporting screw 21, and short bearing shell 4 inner rings of five chip Ball supports match through scraping and guide wheel main shaft 1.Bearing block 6 usefulness screw fastenings are equipped with double-direction thrust ball bearing 11 and make aiding support on front support seat 5 in the bearing block 6, use spheric washer 12(sub-assembly between the two) adjusting play.Double-direction thrust ball bearing 11 axially compresses with front gland 8 and locking nut 9, and double-direction thrust ball bearing 11 is radially used lining 10 adjusting plays.Guide wheel main shaft 1 rear end is provided with another and organizes the short bearing shell 4 of five chip Ball supports, another is organized the short bearing shell 4 of five chip Ball supports and is installed on the rear branching holder 13 by screw base 18, packing ring 19, tight-hanged screw 20, supporting screw 21 equally, and short bearing shell 4 inner rings of five chip Ball supports match through scraping and guide wheel main shaft 1.Whole guide wheel main shaft 1 is installed on the wheel frame of double-sleeve structure, thereby formed a front and back double base guide wheel main shaft that the guide wheel emery wheel is mid-.Guide wheel main shaft 1 rear end is provided with semicircle keyway, links by woodruff key 15 and coupling band 16, is compressed by rear pressing cover 17, by this coupling band 16, the guide wheel reduction box component can be installed.
For improving the lubricating condition of guide wheel main shaft, make enforced lubricating with the oil of living, guide wheel main shaft 1 front end is equipped with front connector circle 7; Rear joint circle 14 is equipped with in guide wheel main shaft 1 rear end; Be respectively equipped with oil-in, oil return opening and drain tap on described front connector circle 7 and the rear joint circle 14.Lubricating oil passes into from oil-in, through the two bearings chamber, again by the oil return opening pass-out, leads to fuel tank.When flow of lubrication was excessive, oil return was untimely, can also overflow from drain tap.A plurality of outside framework oil seals are installed on the guide wheel main shaft 1, prevent leakage of oil.
The short bearing shell internal diameter size of five chip Ball supports described in the utility model is Φ 70mm-Φ 90mm, and priority scheme is: Φ 80mm; Half bearing thickness is: 10mm-20mm, and priority scheme is: 15mm; Bearing shell length is: 60mm-80mm, priority scheme is: 70mm.
The diameter of axle that the main shaft of guide wheel described in the utility model 1 is installed the short bearing shell of five chip Ball supports is: Φ 70mm-Φ 90mm, and priority scheme is: Φ 80mm; Guide wheel main shaft overall length is: 660mm-800mm, priority scheme is: 729mm.
The short bearing shell of described five chip Ball supports: the back side of the short bearing shell 4 of each five chip Ball support of front and back can swing around these supporting screws 21 respectively the short bearing shell 4 of five chip Ball supports and transposes respectively by supporting screw 21 supporting in guide wheel main shaft 1 Plane of rotation.The short bearing shell 4 of five chip Ball supports its sliding surface transversal when not transposing is the circular arc concentric with bearing centre.Bearing shell swings line bearing when main shaft 1 rotation, adjusts the structural parameters of oil film wedge, the oil film pressure of formation and external applied load balance, and the supporting-point of making a concerted effort to pass through of oil film pressure.Increasing bearing shell quantity can Effective Raise bearing capacity and rigidity.So five chip Ball support minor axis tile structures have higher bearing capacity and rigidity than conventional three, four-piece type Ball support minor axis tile structure.
Claims (6)
1. a high accuracy centerless grinding machine center impeller type dynamic pressure oil film guide wheel main axle structure comprises guide wheel main shaft (1), guide wheel (2), chuck body (3), and guide wheel (2) is fixed in the middle of the guide wheel main shaft (1) by the end face clamping of former and later two chuck body (3); Chuck body (3) is used screw fastening with guide wheel (2); It is characterized in that: described guide wheel main shaft (1) front end is provided with the short bearing shell (4) of one group of five chip Ball support, guide wheel main shaft (1) the front end short bearing shell of one group of five chip Ball support (4) is installed on the front support seat (5), and short bearing shell (4) inner ring of five chip Ball supports and guide wheel main shaft (1) match; Bearing block (6), is equipped with double-direction thrust ball bearing (11) and makes aiding support on front support seat (5) with screw fastening in the bearing block (6); Double-direction thrust ball bearing (11) axially uses front gland (8) and locking nut (9) to compress, and double-direction thrust ball bearing (11) is radially used lining (10) adjusting play; Guide wheel main shaft (1) rear end is provided with another and organizes the short bearing shell (4) of five chip Ball supports, and another is organized the short bearing shells of five chip Ball supports (4) and is installed on the rear branching holder (13), and short bearing shell (4) inner ring of five chip Ball supports and guide wheel main shaft (1) match; Guide wheel main shaft (1) is installed on the wheel frame of double-sleeve structure, has formed a front and back double base guide wheel main axle structure that the guide wheel emery wheel is mid-.
2. high accuracy centerless grinding machine center impeller type dynamic pressure oil film guide wheel main axle structure as claimed in claim 1, it is characterized in that: described guide wheel main shaft (1) rear end is provided with semicircle keyway, link by woodruff key (15) and coupling band (16), compressed by rear pressing cover (17).
3. high accuracy centerless grinding machine center impeller type dynamic pressure oil film guide wheel main axle structure as claimed in claim 1, it is characterized in that: described guide wheel main shaft (1) front end is equipped with front connector circle (7); Rear joint circle (14) is equipped with in guide wheel main shaft (1) rear end; Be respectively equipped with oil-in, oil return opening and drain tap on described front connector circle (7) and the rear joint circle (14).
4. high accuracy centerless grinding machine center impeller type dynamic pressure oil film guide wheel main axle structure as claimed in claim 1 is characterized in that: on the described guide wheel main shaft (1) a plurality of outside framework oil seals are installed, prevent leakage of oil.
5. high accuracy centerless grinding machine center impeller type dynamic pressure oil film guide wheel main axle structure as claimed in claim 1 is characterized in that: short bearing shell (4) internal diameter size of described five chip Ball supports is Φ 70mm-Φ 90mm; Half bearing thickness is: 10mm-20mm; Bearing shell length is: 60mm-80mm.
6. high accuracy centerless grinding machine center impeller type dynamic pressure oil film guide wheel main axle structure as claimed in claim 1 is characterized in that: the diameter of axle that described guide wheel main shaft (1) is installed the short bearing shell of five chip Ball supports is: Φ 70mm-Φ 90mm; Guide wheel main shaft overall length is: 660mm-800mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220470300 CN202846274U (en) | 2012-09-15 | 2012-09-15 | Double-bearing dynamic pressure oil slick idler pulley main shaft structure of high-precision centerless grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220470300 CN202846274U (en) | 2012-09-15 | 2012-09-15 | Double-bearing dynamic pressure oil slick idler pulley main shaft structure of high-precision centerless grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202846274U true CN202846274U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220470300 Expired - Fee Related CN202846274U (en) | 2012-09-15 | 2012-09-15 | Double-bearing dynamic pressure oil slick idler pulley main shaft structure of high-precision centerless grinding machine |
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| CN (1) | CN202846274U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447945A (en) * | 2013-08-30 | 2013-12-18 | 栾谨泉 | Improved dual-support oil wedge-shaped dynamic pressure spindle assembly for conical roller coreless grinding machine |
-
2012
- 2012-09-15 CN CN 201220470300 patent/CN202846274U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447945A (en) * | 2013-08-30 | 2013-12-18 | 栾谨泉 | Improved dual-support oil wedge-shaped dynamic pressure spindle assembly for conical roller coreless grinding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20170915 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |